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本文讨论了在双相铁素体—马氏体钢(DFM)范围内的形态学和组织与性能间的相互关系。说明在该形式下,性能取决于混合组织公式的所有参数,那就是铁素体和马氏体强度以及体积百分比。这些参数取决于合金成分和热处理。在控制延性方面,形态学特别重要。因此,初始微观组织和取得最终铁素体—马氏体混合组织的途径是十分重要的。在解释延性和加工硬化时,应估计位错状态。已设计的合金,其抗拉性能基本上与至少达0.4%马氏体和体积百分比无关。原则上强度(和延性)能随马氏体百分比的增加、降低或保持不变,这取决
This article discusses the interplay between morphology and microstructure and properties in the duplex ferritic-martensitic steel (DFM) range. Note that in this form, the performance depends on all the parameters of the mixed tissue formula, that is the ferrite and martensite strength and the volume percentage. These parameters depend on the alloy composition and heat treatment. Morphology is particularly important in controlling ductility. Therefore, the initial microstructure and access to final ferrite - martensite mixed pathways is very important. In interpreting ductility and work hardening, the dislocation status should be estimated. Tensile properties have been designed for alloys that are essentially independent of at least 0.4% martensite and volume percentages. In principle the strength (and ductility) can be reduced, or remain constant as the percentage of martensite increases, depending on